Table 3.
Subgroup analysis: patency rates according to the grafts and target coronary artery characteristics at 3 and 8 years.
| 3 years |
8 years |
|||||||
|---|---|---|---|---|---|---|---|---|
| P-LITA |
S-LITA |
P-LITA |
S-LITA |
|||||
| Assessed | Patent | Assessed | Patent | Assessed | Patent | Assessed | Patent | |
| Free ITA flow | ||||||||
| <50 mL·min−1 | 19 | 17 (89%) | 27 | 23 (85%) | 14 | 12 (86%) | 23 | 20 (87%) |
| ≥50 mL·min−1 | 28 | 28 (100%) | 23 | 22 (95%) | 28 | 27 (96%) | 16 | 15 (94%) |
| ITA flow | ||||||||
| <20 mL·min−1 | 12 | 12 (100%) | 2 | 2 (100%) | 10 | 9 (90%) | 2 | 2 (100%) |
| 20–39 mL·min−1 | 13 | 12 (92%) | 26 | 22 (100%) | 13 | 12 (92%) | 19 | 16 (84%) |
| 40–60 mL·min−1 | 12 | 12 (100%) | 15 | 15 (100%) | 10 | 9 (90%) | 13 | 13 (100%) |
| 60 mL·min−1 | 9 | 9 (100%) | 7 | 6 (86%) | 9 | 9 (100%) | 4 | 4 (100%) |
| LAD stenosis | ||||||||
| <70% | 23 | 21 (91%) | 18 | 14 (78%) | 20 | 17 (85%) | 15 | 12 (80%) |
| 70–89% | 16 | 16 (100%) | 17 | 16 (95%) | 13 | 13 (100%) | 10 | 10 (100%) |
| 90–100% | 9 | 9 (100%) | 17 | 17 (100%) | 9 | 9 (100%) | 14 | 14 (100%) |
| LAD size | ||||||||
| TEA | 1 | 1 (100%) | 1 | 1 (100%) | 1 | 1 (100%) | 1 | 1 (100%) |
| <1.5 mm | 14 | 14 (100%) | 14 | 14 (100%) | 10 | 9 (90%) | 14 | 12 (86%) |
| 1.5–2.0 mm | 22 | 21 (96%) | 27 | 24 (89%) | 23 | 21 (91%) | 17 | 16 (94%) |
| >2.0 mm | 11 | 10 (91%) | 10 | 8 (80%) | 9 | 9 (100%) | 9 | 8 (89%) |
| LAD quality | ||||||||
| Good | 39 | 37 (95%) | 39 | 35 (90%) | 34 | 32 (94%) | 29 | 27 (93%) |
| Mild calcification | 6 | 6 (100%) | 7 | 6 (86%) | 6 | 6 (100%) | 5 | 4 (80%) |
| Severe calcification | 3 | 3 (100%) | 6 | 6 (100%) | 3 | 2 (67%) | 7 | 6 (86%) |
ITA: internal thoracic artery; LAD: left anterior descending artery; P-LITA: pedicled left internal thoracic artery; S-LITA: skeletonized left internal thoracic artery; TEA: thromboendarterectomy.